Re: "I've been struggling to articulate just what it is about Windows 10 that bothers me"
not really - the bigger picture is IT is now an FMCG, like foodstuffs. The view from the megacorps is they have no need for the army of IT admin/tech people (like us lot here) so they are cutting us out of the loop. Userbase is considered tech savvy enough to get the thing working; everything else they'll do over the internet so off the shelf and straight into use with no intermediary administration. We are being retired.